Exam (elaborations)
MED GAS EXAM QUESTIONS AND ANSWERS
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MED GAS EXAM QUESTIONS AND ANSWERS
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MED GAS EXAM QUESTIONS AND ANSWERSCentral Supply systems for positive pressure gases shall have one or more relief
valves, the valves shall have a relief setting that is ____% above normal operating
pressure = - Answers- 50%
when vented to the outside, relief valve vent lines shall be labeled in which way? -
Answers- any mater that will distinguish them from medical gas pipeline
an auxiliary source connection shall consist of all the following except. - Answers- a.
removable plug or cap
b. tee
c. valve
****d. visual pressure indicator
in central supply systems using gas or liquid cylinders, each header shall have a
_______ to prevent debris from entering the manifold control. - Answers- filter
manifolds for gas cylinders shall consist of two equal headers, each header with enough
cylinders for an average day supply, but not fewer than ______ connections - Answers-
2
manifolds for gas cylinders shall have a ______ signal that visibly indicates the
operating status of the equipment and shall have an indicator at all master alarm panels
when or just before the change over from one header to the other takes place -
Answers- local
when multiple buildings are served from a single cryogenic liquid oxygen source, it is
required to place the emergency oxygen supply connection in - Answers- each building
served
the minimal clearance around the EOSC for a temporary source of supply is _____ feet
- Answers- 3
in those portions of systems intended to handle oxygen at gage pressures greater than
_____ PSI, interconnecting the hose shall contain NO polymeric materials - Answers-
350
why does the NFPA require a minimum clearance around an EOSC? - Answers- for the
temporary connection of source supply
which of these is a requirement for the control equipment of a bulk system that is
installed physical remote from the source of supply? - Answers- ability to locked and
secured
,mainfolds for gas cylinders shall include a ______ means for alternating the two
headers from primary to secondary - Answers- automatic
which of the following are medical support gases? - Answers- nitrogen and instrument
air
a factory assembled product designed for aesthetics or convenience that contains
medical gas or vacuum outlets, piping, or other devices related to medical gases. this is
a definition of which of the following? - Answers- manufactured assembly
the piping that connects the source (pumps, receivers, etc) to the risers or branches or
both. this is a definition of what? - Answers- main lines
which of the following is a device for connecting the outlets of one or more gas cylinders
to the central piping system? - Answers- manifold
which is NOT part of the manifold system? - Answers- *****a. instrument air outlet
b. valve
c. regulator
d. pigtail
NFPA 99 design requirements for duplexed line pressure regulators piped in parallel for
the following benefits - Answers- either regulator can be serviced without interrupting
line service
locations for central supply and the storage of positive pressure gases if stored outside
and the area of storage is greater than 200 square feet shall have how many
entry/exits? - Answers- 2
medical air supply systems that operate at different pressures shall be provided with? -
Answers- pressure regulator
a _______ emergency reserve system can be substituted for the EOSC - Answers- in-
building
how many egress gates are required for outdoor enclosures containing bulk cryogenic
liquid systems? - Answers- 2
an EOSC shall be installed on the exterior of the building being served. it shall be
protected from physical damage and with a minimum clearance around the connection
of _______ - Answers- 3 feet
the NFPA 99 has four relevant patent categories for medical gases, determined and
defined by the risk assessment. which four best describes the categories? - Answers-
death or major injury, minor injury, patient discomfort, and no impact
, alternate systems, methods, or devices approved as equivalent shelled be approved by
- Answers- AHJ (authority having jurisdiction)
which of these is a requirement for both the primary and secondary headers for
manifolds which contain cryogenic liquid? - Answers- located in same inclosure
which area may be acceptable to communicate with an indoor central supply location of
oxygen, nitrous oxide, or a mixture of these gases? - Answers- an in-building
emergency reserve system
which of the following is an NFPA requirement for electrical devices in locations where
medical gas cylinders are stored? - Answers- devices must be protected from physical
damage
all positive pressure supply systems shall be provided with the means to control the final
line pressure at the source and include _____ - Answers- protection against
overpressure
a bulk cryogenic supply system shall be designed redundant for service, as to maintain
normal operation while being serviced. they shall also be of a? - Answers- balanced
design
doors for central supply systems and storage facilities of all positive pressure gases
shall have a fire rating of how many hours? - Answers- 3/4 hour
if an in-building emergency reserve system is provided as a substitute EOSC, it shall be
located in a room or enclosure constructed of materials rated such that all walls, floors,
ceilings are a minimum of what fire rating? - Answers- 1 hour
if heat is required for central supply system rooms, what is the maximum allowable
temperature of the heating element? - Answers- 266 F
A ______ system is an assembly of equipment (storage containers, regulators, relief
devices, vaporizers, manifolds, piping, etc) that has a storage capacity of more than
20,000 cubic ft. (at normal temp and pressure) including unconnected reserves on hand
at the site - Answers- bulk oxygen
what does it mean when the item is "listed"? - Answers- they are included in a list
published by an organization that is acceptable to the AHJ
the horizontal perimeter of the patient care vicinity space extends how far from the bed?
- Answers- 6 feet
the "area of administration" is defined as any point in a room within _____ feet of
oxygen equipment or an enclosure (hyper/hypobaric) where oxygen can be
administered - Answers- 15 feet
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